Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

Ages for Opal at Rio Grande Do Norte, Brazil

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 513Ma - 506.1Ma at this locality

Age range from children

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
Bradley_2012_024	513	507				30431	Capoeira 2 Pegmatite (Mulungu Pegmatite), Parelhas, Borborema Mineral Province, Rio Grande Do Norte, Brazil	McCauley and Bradley (2014)	CM52_183
Alexandra-0139	511.9	506.1				30433	Capoeira 1 Pegmatite (Boqueirãozinho Pegmatite), Parelhas, Borborema Mineral Province, Rio Grande Do Norte, Brazil	Baumgartner et al. (2006)	CM44_69

Locality age

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
Alexandra-0139	511.9	506.1				30433	Capoeira 1 Pegmatite (Boqueirãozinho Pegmatite), Parelhas, Borborema Mineral Province, Rio Grande Do Norte, Brazil	Baumgartner et al. (2006)	CM44_69
Alexandra-0140	524.5	522.3				4461	Boqueirão Pegmatite, Parelhas, Borborema Mineral Province, Rio Grande Do Norte, Brazil	Beurlen et al. (2014)	JSAES56_110
Alexandra-0370	7.38	6.16	Parauranophane	Autunite, Brannerite		30432	Alto Dos Quintos Mine (Quintos Pegmatite; Quintos De Baixo), Parelhas, Borborema Mineral Province, Rio Grande Do Norte, Brazil	Dill et al. (2013)	JSAES45_160
Alexandra-0371	530	480				30432	Alto Dos Quintos Mine (Quintos Pegmatite; Quintos De Baixo), Parelhas, Borborema Mineral Province, Rio Grande Do Norte, Brazil	Dill et al. (2013)	JSAES45_160
Bradley_2012_024	513	507				30431	Capoeira 2 Pegmatite (Mulungu Pegmatite), Parelhas, Borborema Mineral Province, Rio Grande Do Norte, Brazil	McCauley and Bradley (2014)	CM52_183
Bradley_2012_025	516	514				14755	Mamões Pegmatite, Equador, Borborema Mineral Province, Rio Grande Do Norte, Brazil	McCauley and Bradley (2014)	CM52_183